Autonomous-synergic Voltage Security Regions in Bulk Power Systems

Li, Fan; Niu, Tao; Li, Xue; Li, Yuxiao; Huang, Tianen; Wu, Zhenjie

doi:10.35833/mpce.2021.000550

Journal of Modern Power Systems and Clean Energy

2023

DOI: 10.35833/mpce.2021.000550

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Autonomous-synergic Voltage Security Regions in Bulk Power Systems

Fan Li

Tao Niu²,

Xue Li³

et al.

Abstract: Determining security/stability boundaries is a common and critical means of preventing cascading failures induced by voltage-related issues, which represents one of the major challenges in bulk power systems. However, traditional approaches suffer from conservative issues and heavy computational burdens. To address these challenges, the concept of an autonomous-synergic voltage security region (AS-VSR) and the corresponding dynamic constraint coefficient pruning (DCCP) computation method, which fully consider … Show more

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2024

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Adaptive control strategy for grid-based energy storage converter under frequency disturbance

Wang,

Yue,

et al. 2024

J. Phys.: Conf. Ser.

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The grid-based energy storage converter is regarded as vital equipment for constructing a new power system because of its ability to sort out new energy consumption and improve the system’s moment of inertia. Currently, most of the adaptive control strategies of Grid-configured energy storage are optimized for the dynamic virtual synchronous generator technology (VSG) process. More research is needed on the steady-state deviation of VSG under grid frequency disturbance. To solve this problem, this paper proposes an adaptive control strategy for grid-based energy storage converters. First, this essay examines the control approach used by VSG. Subsequently, the damping and inertia of VSG with fixed parameters are replaced by the inertia, and damping is calculated using the adaptive algorithm to optimize the dynamic and steady-state performance. Finally, Simulations utilizing MATLAB/Simulink are employed to confirm the efficacy of the adaptive VSG network-building control approach.

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Adaptive control strategy for grid-based energy storage converter under frequency disturbance

Wang,

Yue,

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

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The Voltage Security Region Calculation Method of Receiving-End Power System Based on the Equivalence of Transient Process

Li¹,

Tian

Xu³

et al. 2022

IEEE Access

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In order to ensure the voltage security of the receiving-end power grid under both steady state and N-1 faults, it is necessary to conduct an accurate dynamic reactive power reserve assessment to ensure its normal voltage operation range at steady state. In other words, it's to determine the power grid voltage security region which is a transient stability constrained optimal power flow (TSCOPF) problem essentially. However, it needs to consider a large amount operational snapshots and corresponding transient constraints under each snapshot, which increases the computational burden heavily. To overcome this issue, this paper proposes a calculation method for the voltage security region of receiving-end power grid through the equivalence of the transient process. Firstly, based on the power grid partition and the matrix of graph theory, the different snapshots are selected to obtain typical snapshots, and then for the typical snapshots sought, the transient stability constraints under the fault are transformed into steady-state constraints. In other words, the form is consistent with the steady-state equation but the impedance matrix parameters are equivalently adjusted. In essence, it is equally to replace the constraints of the optimization problem under the premise of ensuring that the consistency of the boundary conditions, so as to greatly accelerate the solution speed under the premise of ensuring the accuracy of the solution, and the calculation cases made in the modified IEEE9 system and the modified IEEE39 system prove the effectiveness and reliability of the proposed method in this paper.INDEX TERMS the equivalence of transient process, voltage security region, and receiving-end power system.

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Autonomous-synergic Voltage Security Regions in Bulk Power Systems

Cited by 2 publications

References 8 publications

Adaptive control strategy for grid-based energy storage converter under frequency disturbance

Adaptive control strategy for grid-based energy storage converter under frequency disturbance

The Voltage Security Region Calculation Method of Receiving-End Power System Based on the Equivalence of Transient Process

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